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Trello is a collaboration tool that organizes your projects into boards. In one glance, Trello tells you what's being worked on, who's working on what, and where something is in a process….Trello lets you organize anything easily, from life goals and to-do lists to group projects. [You can] add images, checklists, due dates, attachments, and more to your Trello board. [And] team projects are where Trello really shines: improve communication, eliminate email traffic, and get everyone on the same page—fast.

EtherCalc is a web spreadsheet. Your data is saved on the web, and people can edit the same document at the same time. Everybody's changes are instantly reflected on all screens. Work together on inventories, survey forms, list management, brainstorming sessions and more!